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Gentoo Linux Security Advisory GLSA 200806-04 |
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http://security.gentoo.org/ |
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|
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Severity: Normal |
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Title: rdesktop: Multiple vulnerabilities |
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Date: June 14, 2008 |
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Bugs: #220911 |
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ID: 200806-04 |
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|
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Synopsis |
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======== |
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|
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Multiple vulnerabilities in rdesktop may lead to the execution of |
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arbitrary code or a Denial of Service. |
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|
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Background |
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========== |
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|
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rdesktop is an open source Remote Desktop Protocol (RDP) client. |
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|
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Affected packages |
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================= |
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|
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------------------------------------------------------------------- |
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Package / Vulnerable / Unaffected |
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------------------------------------------------------------------- |
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1 net-misc/rdesktop < 1.6.0 >= 1.6.0 |
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|
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Description |
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=========== |
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|
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An anonymous researcher reported multiple vulnerabilities in rdesktop |
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via iDefense Labs: |
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|
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* An integer underflow error exists in the function iso_recv_msg() in |
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the file iso.c which can be triggered via a specially crafted RDP |
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request, causing a heap-based buffer overflow (CVE-2008-1801). |
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|
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* An input validation error exists in the function |
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process_redirect_pdu() in the file rdp.c which can be triggered via a |
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specially crafted RDP redirect request, causing a BSS-based buffer |
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overflow (CVE-2008-1802). |
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|
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* An integer signedness error exists in the function xrealloc() in |
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the file rdesktop.c which can be be exploited to cause a heap-based |
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buffer overflow (CVE-2008-1803). |
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|
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Impact |
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====== |
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|
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An attacker could exploit these vulnerabilities by enticing a user to |
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connect to a malicious RDP server thereby allowing the attacker to |
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execute arbitrary code or cause a Denial of Service. |
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|
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Workaround |
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========== |
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|
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There is no known workaround at this time. |
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|
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Resolution |
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========== |
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|
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All rdesktop users should upgrade to the latest version: |
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|
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# emerge --sync |
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# emerge --ask --oneshot --verbose ">=net-misc/rdesktop-1.6.0" |
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|
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References |
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========== |
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|
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[ 1 ] CVE-2008-1801 |
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http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-1801 |
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[ 2 ] CVE-2008-1802 |
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http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-1802 |
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[ 3 ] CVE-2008-1803 |
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http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-1803 |
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|
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Availability |
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============ |
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|
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This GLSA and any updates to it are available for viewing at |
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the Gentoo Security Website: |
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|
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http://security.gentoo.org/glsa/glsa-200806-04.xml |
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|
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Concerns? |
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========= |
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|
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Security is a primary focus of Gentoo Linux and ensuring the |
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confidentiality and security of our users machines is of utmost |
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importance to us. Any security concerns should be addressed to |
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security@g.o or alternatively, you may file a bug at |
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http://bugs.gentoo.org. |
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|
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License |
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======= |
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|
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Copyright 2008 Gentoo Foundation, Inc; referenced text |
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belongs to its owner(s). |
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|
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The contents of this document are licensed under the |
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Creative Commons - Attribution / Share Alike license. |
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|
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http://creativecommons.org/licenses/by-sa/2.5 |
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